Transcription
Modicon M171/M172For HVAC control solutionsLogic controllers and Configuration softwareCatalogOctober2018
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General contentModicon M171/M172 for HVAC control solutionsLogic controllers and configuration softwarebb General overviewvv Maximize business and machine performancewith EcoStruxureTM Machine. 2vv Flexible. 3vv Efficient. 4vv Connected . 5bbvvvvvvvvvvvvModicon M171/M172 logic controllersModicon M171/M172 range. 6System components. 7Configuration software. 8Ethernet connection. 9Architectures .10 and 11Selection guide.12 and 13bb Modicon M172 logic controllers-- Presentation. 14-- Description. 15-- References.16 and 17vv I/O Expansion modules-- Presentation, Description. 18-- References. 19vv Remote displays-- Presentation, Description. 20-- References. 21bb Modicon M171 optimized logic controllers-- Presentation, Description. 22-- References. 23vv I/O Expansion modules-- Presentation, Description. 24-- References. 25vv Remote displays-- Presentation, Description. 26-- References. 27bb Modicon M171 performance logic controllers-- Presentation, Description. 28-- References. 29vv I/O Expansion modules-- Presentation, Description. 30-- References. 31bb Communication modules-- Presentation, Description. 32-- References. 33bb Electronic expansion valve drivers-- Presentation, Description. 34-- References. 35bbvvvvvvMeasurement accessoriesTemperature control. 36Humidity control. 37Humidity & Temperature control. 37bb Pressure transmitters. 38bb Compatibility: Variable speed drives and machines. 39bb EcoStruxureTM Machine Expert - HVAC programming software-- Presentation, characteristics. 40-- Product offer, References . 41bb Product reference index-- Logic controllers and software. 421
Modicon M171/M172 logic controllersGeneral presentationMaximize business and machine performancewith EcoStruxureTM MachineTo be competitive in today’s digital era, machine builders must beinnovative. Smart machines, those that are better connected, more flexible,more efficient, and safe, are enabling machine builders to innovate in waysnever before possible. EcoStruxure Machine, our open, interoperable, IoT-enabled systemarchitecture helps you build smarter machines and equipment faster, makingyour business more efficient, profitable, and sustainable. EcoStruxure Machine brings together key technologies for product connectivityand edge control on premises, and cloud technologies to provide analytics anddigital services. EcoStruxure Machine helps you bring more innovation and added value to yourcustomers throughout the entire machine life cycleEmpowering industrial OEMs for thedigital eraReady-to-use architectures and function blocks Tested, Validated, and Documented Architectures (TVDAs) are just one of theways we help to reduce design time. Whether machines are simple or complex, Application Function Blocks (AFBs)make system design fast and easy.Modicon M171/M172 is part of EcoStruxure Machine32145769819151410131211121613171011Fan management18 HP-Floating High Pressure controlHVAC/Chiller/Modbus SL/Modicon M172 performance logic controllerSolution breakdownCompressor managementEnergy managementApplication Function Blocks (AFBs)21234567891011Compact NSX circuit breaker12iEM3000 energy meterTeSys D contactor13C60L-MA modular circuit breakerPhaseo switch mode power supply14C60L-DC DC circuit breakerModicon M172 performance logic controller 15Modicon M172 I/O moduleModicon M171 remote display16TeSys GV2L magnetic circuit breaker17TeSys D contactor1819Altivar 212 variable speed drive, for 0.75 to75 kW (1.0 to 100 hp) motorsModicon M171 electronic expansion valvedriverModicon TM1Spppp humidity andtemperature probesTelemecanique sensors: XMLP pressuretransmittersElectronic expansion valveAltistart 01 soft starterHarmony XB4/XB5 signaling unitsHarmony XALK Emergency stoppush button
General presentation(continued)Modicon M171/M172 logic controllersFlexibleFlexible and scalable performanceFlexibleWhether you specialize in chillers, Air Handling Units for commercialbuildings, residential, or industrial applications, etc.With the range of Modicon M171/M172 logic controllers, EcoStruxureTM Machine iswell positioned.Multiple BMS (Building Management System) connectivity, embedded or as anoption, and an embedded web server make remote control and remote accesssimple to implement, while a unique software environment supports thedevelopment of algorithms and functions that can be used on any platform.Modicon M172 performance logic controllersModicon M172 optimized logic controllersScalabilityModicon M171 optimized logic controllersPerformance and connectivity Best-in-class versatilityand compact size Best-in-class performance Modicon M172 logic controllers for any size of connectable or connectedHVAC machine. With Modicon M172 optimized, manage small to large HVACmachines, connectable to BMS or the cloud. Or use Modicon M172performance to have native connectivity for connected HVAC machines. Modicon M171 optimized logic controller for simple and compact machines isone of the smallest programmable controllers on the market. Available also forflush mounting, it requires minimal installation time and offers tremendousversatility. Modicon M171 performance logic controller for complex and BMS connectablemachines, can be adapted to virtually any application.3
General presentation(continued)Modicon M171/M172 logic controllersEfficientEverything needed is embeddedEfficientThe high degree of flexibility makes it very easy to install additional modules and stillkeep everything in just one configuration: Controllers Remote displays Expansion modules Communication modules Wide range of humidity and temperature probesLogic controllersRemote displaysExpansion modulesModicon M171 optimized, for simple and compact machinesHumidity and temperature sensorsModicon M172, for any size of connectable or connected machineCommunication modulesIntuitive automation with EcoStruxure Machine Expert - HVAC EcoStruxure Machine Expert - HVAC is the universal programming softwarefor machines automated by Modicon M171/M172 logic controllers. Simplified navigation that requires only a few clicks delivers a more efficientengineering process.EcoStruxure Machine Expert - HVAC simplifies each of the steps inmachine design and commissioning4
General presentation(continued)ConnectedModicon M171/M172 logic controllersConnectedConnected everywhereDepending on your connectivity needs, select the right product M171 optimized for simple and compact machines-- Modbus RTU-- LAN Expansion Bus M172 for any size of connectable (M172 optimized) or connected (M172performance) machine-- Modbus RTU-- Modbus TCP-- BACnet MS/TP (B-AAC Profile certified BTL)-- BACnet /IP (B-AAC Profile certified BTL)-- ASCII support for GSM Modem-- CAN Expansion Bus-- LonWorks (FFT-10)-- Webserver, FTP Client/Server, Email, Proxy management, white list, SNTPCustomization and servicesOur experts help you every step of the way, from perfecting machine design toon-site servicing of the finished machine Global support, 24/7 hotline services, and replacement parts centers around theworld enable you to deliver superior customer support and satisfactionFully customized solution and co-design with our Application Design Experts(ADE) Design an optimized solution for your machine to create added value, with thehelp of our experienced ADEsTurnkey control panel Engineering expertise for codes and standards compliance Custom engineering to provide the optimum solution and meet specific needsCollaboration from design to commissioning Recruited directly from the industries they serve, ADEs collaborate with you fromdesign through to programming, as well as in the commissioning of turnkeyinstallationsExpert support throughout your system’s life cycle A dedicated team of Schneider Electric application design experts providesworldwide support for your HVAC solution5
PresentationModicon M171/M172 logic controllersModicon M171/M172 rangeGeneral presentationThe Modicon M171/M172 logic controller range has been developed to managedigital and analog inputs and outputs for controling HVAC machines and to offernumerous possibilities for connection to different Building Management Systemcommunication networks.Modicon M171/M172 rangeHVACHeat pumpbb The range of Modicon M171/M172 logic controllers is a consistent offer made upof:-- several types of controller depending on the requested performance andconnectivity-- a variety of communication modules to connect them to the BMS-- a choice of expansion modules to increase and adapt the number and type ofI/O-- monochrome and color displays-- EcoStruxure Machine Expert - HVAC, the dedicated software used to program,commission and debug applications-- and a set of sensorsbb The M171/M172 range is suitable for customized applications designed to controlHVAC machines such as:-- Air/water-cooled chiller-- Rooftop unit-- Heat pump-- Compressor rack-- Ventilation unit-- Precision air conditioner-- Heat recovery unit-- Air handling unitbb The offer is flexible and scalable, depending on the application requirements. Anyexisting controller can evolve later as all M171/M172 controllers are programmedwith the same EcoStruxure Machine Expert - HVAC software.-- M171 optimized controllers are designed for simple and compact machineswhen only Modbus SL is needed with less than 44 I/O.-- M172 controllers are designed for any size of connectable (M172 optimized) orconnected (M172 performance) machines, from 7 to 238 I/O and can be usedwith expansion modules. M172 performance controllers embed connectivity,and M172 optimized controllers offer optional connectivity.ChillerAir handling unit6
Modicon M171/M172 logic controllersPresentationSystem componentsGeneral presentationSystem componentsEach family of M171 and M172 controllers, is available in both an optimized andperformance version, and comprises several types of product sorted by function andcompatibility.21Modicon M171/M172 logic controllers are available with or without an embeddeddisplay, with or without SSE output depending on the base product.I/O expansion modules are mixed digital and analog I/O types.M171 optimized logic controllersbb TM171Opppp optimized logic controllers, see page 22and TM171EOppR I/O expansion modules, see page 24and TM171Dpppp remote displays, see page 26431234M171 performance logic controllersRemote flush mounting displayRemote wall mounting displayM171 optimized logic controllerI/O expansion modulebb TM171Ppppp performance logic controllers, see page 28and TM171EPppR I/O expansion modules see page 30and TM171DGRP remote displays see page 29M172 optimized and performance logic controllersbb TM172Opppp optimized and TM172Ppppp performance logic controllers, seepage 14and TM172EppR I/O expansion module, see page 18and TM172DCpppp remote color touch screen displays, see page 201Communication modules321234554Color touch screen displayCommunication moduleM172 optimized logic controllerI/O expansion moduleElectronic expansion valve driverbb TM171Apppp communication modules (BMS fieldbus interfaces) provide theTM171Ppppp performance, TM172Opppp optimized and TM172Pppppperformance logic controllers with a connection to:-- BACnet MS/TP (B-AAC profile) or IP-- Modbus SL (Serial Link)-- Modbus TCP-- LonWorks (FFT-10)-- Profibus-- CAN bus-- Etc. see page 32.Electronic expansion valve driversbb TM171VEVpp electronic expansion valve drivers compatible with the entireModicon M171/M172 logic controller range and also with third party controllersand electronic expansion valves, see page 34Measurement accessoriesbb Specific measurement accessories TM1Spppp: humidity and temperatureprobes, see page 36.1bb Pressure transmitters from our partner Telemecanique sensors, see page 381Softwarebb EcoStruxure Machine Expert - HVAC programming software, and programmingaccessories, see page 40.Connection accessoriesbb Adapted connection accessories: I/O connectors and cables, see page 27.231 Color touch screen display2 M172 performance logic controller3 I/O expansion moduleMeasurement accessoriesPressure transmitters7
Modicon M171/M172 logic controllersPresentation (continued)Configuration softwareGeneral presentation (continued)Configuration softwareModicon M171/M172 logic controllers are supported by an intuitive softwarepackage: EcoStruxure Machine Expert - HVAC, see page 40.This software follows a simple drag-and-drop function block approach toconfiguration and is completed with a library of Application Function Blocks (AFBs)and logic functions.EcoStruxure Machine Expert - HVAC uses five languages compliant with IEC61131-3.Examples:STvar2: var2 1;if (var2 200) thenvar2: 0;var1: not var1;counter: counter 1;if (DI2 TRUE) thenout1: counter and 5;out2: counter and 7;out3: counter and 12;elseFBDLD. .MAX.MainIn1. .In2. .Start.N .En1. / untriggerld truest blinker.runcal trigger.SFC. Init. SW1. .Step05 languages compliant with IEC 61131-3Structured Text language(ST)Function Block Diagramlanguage (FBD)Instruction List language(IL)Sequential Function Chart language(SFC)Ladder Diagram language(LD)Available resources on logic controllers for IEC programmingLogic controller typeM172 optimized and M172performanceM171 optimizedM171 performanceCPU120 MHz, 32 MB RAM14.7 MHz72 MHz, 32 MB RAMAvailable memory for application1.0 MB188 kB1.0 MBAvailable memory for user interface1.5 MB–1.5 MBFlash memory data5 MB–126 MBRAM memory (automatic mapping)512 kB (256000 word)2048 B (1024 word)512 kB (256000 word)RAM memory (Modbus mapping)10 kB (5000 word)1024 B (512 word)10 kB (5000 word)EEPROM variables28 kB (14000 word)1024 B (512 word)28 kB(14000 word)8
Presentation (continued)Modicon M171/M172 logic controllersEthernet connectionGeneral presentation (continued)Ethernet connectionEthernetM172 performance logic controllers linked to Ethernet via theembedded RJ45 portsEthernet access is available on M171/M172 logic controllers:-- embedded in M172 performance logic controllers-- optional with M171 performance and M172 optimized logic controllers bymeans of a communication module, see page 32Ethernet access enables several functions such as: HTTP Webserver (Webvisu) Remote access-- Download program-- Display program download-- Download, upload parameters-- Download firmware-- Debug-- File management Bridge: specific function allowing controllers connected in Modbus SL to the samecontroller to be programmed via Modbus FTP client/serverThese services are not always available: the service can be enabled or disabled via the controller programming a white list is used to provide access (no white list defined by default)EthernetM172 optimized logic controller linked to Ethernet via theTM171AETH or TM171AETHRS485 communication module9
Modicon M171/M172 logic controllersPresentation (continued)M172 logic controllersGeneral presentation (continued)Modicon M172 logic controllers for any size of connectable or connected HVAC machinesEcoStruxure Machine Expert - HVACEthernet (Modbus TCP, BACnet/IP, HTML)BACnet MS/TP, Modbus SLLONworksKonnex (KNX)Ethernet/Modbus TCP123Modbus SL 2456CAN (Binding)12131410Modbus SL 115161 TM172DCLFp flush mounting display, see page 212 spaceLYnk gateway, see on our website www.schneider-electric.com3 Magelis STO/STU HMI, see on our website www.schneider-electric.com4 TM171ALON communication module, see page 325 TM171ODppp optimized logic controller (18 I/O in 4 DIN), see page 166 TM172PBppp performance logic controller (7 or 18 I/O in 4 DIN), see page 177 TM172PDppp performance logic controller (28 or 42 I/O in 8 DIN), see page 148 TM172E12R I/O expansion module (12 I/O in 4 DIN), see page 189 TM172E28R I/O expansion module (28 I/O in 4 DIN, see page 1810 TM172DCWp wall mounting remote display, see page 2011 TeSys D motor starter, see on our website www.schneider-electric.com12 Electromechanical relays, solid state relays, see on our website www.schneider-electric.com13 XMLP pressure transmitter, see page 3814 TM1STpp temperature sensor PT1000 or NTC, see page 3715 SPD310 Differential pressure sensor, see on our website www.schneider-electric.com16 H721LC-S6 current transducer, see on our website www.schneider-electric.com17 iEM 3000 energy meter, see on our website www.schneider-electric.com18 Altivar 212 variable speed drive, see on our website www.schneider-electric.com19 TM171VEVpp electronic expansion valve driver, see page 3420 SE8000 room controller (thermostat), see on our website www.schneider-electric.com21 TM1SHpp humidity sensor, see page 37109CAN expansion busI/O118741718192021
Modicon M171/M172 logic controllersPresentation (continued)Modicon M171 optimized logic controllersGeneral presentation (continued)Modicon M171 optimized logic controllers for simple and compact machinesEcoStruxure Machine Expert - HVACEthernet (Modbus TCP, BACnet/IP, Web Visu)1Modbus SL2or234LAN expansion bus5LAN expansion bus6I/O7123456789899TM171PFE03 performance logic controller, see page 28TM171OFM22R optimized logic controller - flush mounting, see page 22TM171EOpp I/O expansion module, see page 24TM171DLED remote display, see page 26TM171DLCD remote display, see page 26TM171DWAL remote wall mounting display, see page 26Altivar 212 variable speed drive, see on our website www.schneider-electric.comTM1STpp temperature sensor PT1000 or NTC, see page 37TM1SHpp humidity sensor, see page 3711
Selection guideModicon M171/M172 logic controllersM172 optimized logic controllersfor any size of connectable machinesApplicationsM172 performance logic controllersfor any size of connected machinesbb Air/water-cooled chillerbb Rooftop unitbb Heat pumpbb Precision air conditionerbb Compressor rackbb Heat recovery unitM171 optimized logic controllersfor simple and compact machinesM171 performance logic controllersfor complex and BMS connectable machinesbb Air/water-cooled chillerbb Rooftop unitbb Heat pumpbb Compressor rackbb Ventilation unitbb Air/water-cooled chillerbb Rooftop unitbb Heat pumpbb Precision air conditionerbb Compressor rackbb Heat recovery unitEcoStruxure Machine Expert - HVAC V1.0 or higherProgramming softwareEcoStruxure Machine Expert - HVAC V2.4 orhigherEcoStruxure Machine Expert - HVAC V2.4 orhigherEcoStruxure Machine Expert - HVAC V1.0 or higherMaximum number of I/O with expansion modules238 (TM172ODM42R 7 TM172E28R)238 (TM172PDG42RI 7 TM172E28R)4428351327Generic programmableinputsDigital input2, 8 or 12 digital inputs2, 8 or 12 digital inputs6 digital inputs2 digital inputs9 digital inputs–Analog input8 or 12 analog inputs2, 8 or 12 analog inputs5 configurable analog inputs5 configurable analog inputs6 configurable analog inputs3 configurable analog inputsGeneric programmableoutputsDigital output6, 8 or 12 digital outputs3, 6, 8 or 12 digital outputs6 digital outputs4 digital outputs7 digital outputs–Analog output2, 4 or 6 analog outputs0, 2, 4 or 6 analog outputs5 analog outputs5 analog outputs5 analog outputs–CommunicationEmbedded communicationportbb 2 RS485, Modbus SL master/slave (only 1master), 1 BACnet MS/TP (B-AAC profile)bb 1 CAN expansion busbb 2 RS485, Modbus SL master/slave (only 1master), 1 BACnet MS/TP (B-AAC profile)bb 1 RJ45 connector for Modbus TCP master/slave and BACnet IP (B-AAC profile),Ethernet (Webvisu , FTP, etc.)bb 1 CAN expansion busbb 1 wired connector for LAN expansion busbb 1 wired connector for Modbus SL master/slave for TM171OpMpppbb 1 CAN expansion busbb 1 Modbus SL master/slavebb 1 CAN expansion busbb 1 Modbus SL master/slaveor BACnet MS/TP (B-AACprofile)bb 1 RJ45 connector forModbus TCP and BACnet IP(B-AAC profile) (WebVisu) (1)Optional communication(see page 32)With TM171Appp communication modules:bb RS485 (Modbus SL or BACnet MS/TP)bb CAN busbb RS232bb LonWorks (FFT-10)bb Modbus TCP, BACnet /IP, EthernetWith TM171Appp communication modules:bb RS485 (Modbus SL or BACnet MS/TP)bb CAN busbb RS232bb LonWorks (FFT-10)None except with a gatewayWith TM171Appp communicationmodules:bb Modbus TCP (WebVisu)bb Modbus SLbb BACnet MS/TP (B-AAC profile,certified BTL)bb BACnet IP (B-AAC profile,certified BTL)bb CAN busbb RS 232bb Profibusbb LonWorks (FFT-10)None except with a gatewayUSB portYes : 1 USB-Mini-BYes: 1 USB-A and 1 USB-Mini-BNo (program can be downloaded with the TM171AMFK programming stick andTM171ADMI programming cable)Yes: 1 USB-A and 1 USB-Mini-BNoServicesbb Download the program via USB-A orbb Download the program through USB-A orModbus SLModbus SLbb Optional services depending on the Ethernet bb Remote accesscommunication modulebb HTTP Webserver (Webvisu)bb FTP client/serverbb SNPTRemote download via Modbus SLbb Remote downloadbb File management (virtual FTP)bb Text e-mailbb Datalogging24 V z24 V z12-24 V a or 24 V c for all, 12-24 V a forTM171Opp22S100.240 V a, isolated24 V z or 48 V cBuilt-inYes, on TM172ODMppp controllersYes, on TM172PDGppp controllersYes, on TM171ODp22pcontrollersYes, on TM171ODM14RcontrollersYes, on TM171PDM27pcontrollersRemoteYes,-- with TM172DCLpppp color touch screen displays-- with TM171DGRP display-- with HMI Magelis offer, see on our website www.schneider-electric.comYes,-- with TM171DLED, TM171DLCD, and TM171DWAL2p displays-- with TM172DCLpppp color touch screen displays-- with HMI Magelis offer, see on our website www.schneider-electric.com35 mm/1.38 in.35 mm /1.38 in.Power supplyDisplayMountingProduct certificationsLogic controller referencePagerail, or on panel with TM172AP12PM mounting accessory, cURus (UL Recognized), CSA, EAC, RCM, RoHS China, BACnet 2pI1617(1) On the same port at the same time12railYesFlush mounting35 mm/1.38 in.Yes,-- with TM171DGRP display-- with TM172DCLpppp color touch screen displays-- with HMI Magelis offer, see on our website www.schneider-electric.comrail, cURus (UL Recognized), CSA, EAC, RCM, RoHS M14R,TM171OD14R35 mm/1.38 in.railFlush mountinge, cURus (UL Recognized), CSA, EAC, RCM, RoHS ChinaTM171PDM27p,TM171PBM27RTM171PFE03pp29(1) On the same port at the same time13
PresentationModicon M171/M172 logic controllersM172 logic controllersPresentationM172 optimized and performance logic controllersThe Modicon M172 logic controllers consist of the M172 optimized and the M172performance logic controllers, differentiated by the connectivity: embedded on M172performance, optional on M172 optimized.M172 controllers embed 7, 18, 28 or 42 I/O, and can be fitted with a display, withrelay outputs, and with SSR outputs, depending on the model.bb The M172 logic controller offer comprises:-- a M172 model to control from 7 up to 18 embedded I/O (digital and analog), in4 DIN (controller width is 72 mm /2.83 in.)-- and M172 models to control from 28 up to 42 embedded I/O (digital and analog),in 8 DIN (controller width 144 mm /5.66 in.)bb Power supply: 24 V zbb Two types of housing:-- with built-in display-- without displaybb Two types of mounting:-- On 35 mm/1.38 in. 5 rail mounting: for M172 controllers to be mounted insidea cabinet-- On panel with an accessory: for M172 controllers to be mounted on a panelwith TM172AP12PM fixing accessorybb Communication ports on M172 optimized logic controllers:-- Two RS485 for Modbus SL (master/slave) (only 1 master) or 1 for BACnetMS/TP (B-AAC profile, BACnet BTL certified)-- One for CAN expansion bus-- Plus one communication module connectorbb Communication ports on M172 performance logic controllers: same as M171optimized, plus one RJ45 for Modbus TCP, BACnet IP (B-AAC profile, BACnetBTL certified) and Ethernetbb M172 logic controllers can be connected to communication modules, offeringanother connection to a CAN expansion bus, Modbus SL or LonWorks, etc., seepage 32.bb The M172 logic controllers are certified , cURus (UL Recognized), CSA, EAC,RCM, RoHS China, and BACnet BTL certified.bb Micro SD card: a slot for a micro SD memory card is available on the front face of theM172 performance controllers (1).The micro SD card is used for:-- Data logging-- Webserver storagebb USB programming ports-- The USB-A port is available on M172 performance logic controllers, used totransfer programs with a memory stick.-- USB mini B is available on M172 optimized and performance logic controllers,used to connect to a PC for programming, see page 41.(1) M172 optimized logic controllers do not have a slot for a micro SD card (no slot can be addedlater).14
Modicon M171/M172 logic controllersDescriptionM172 logic controllersDescriptionM172 optimized and performance logic controllers12M172 logic controllers with 7 or 18 I/O (in 4 DIN: controller width is 72 mm /2.83 in.) (1)1 RJ45 connector for Modbus TCP, BACnet IP (B-AAC profile) and Ethernet (2)2 Connector for removable terminal block for digital outputs3 Connector for removable terminal block for power supply (24 V z) (3)4 Connector for removable terminal block for analog inputs5 Connector for removable terminal block for digital intputs6 Connector for removable terminal block for fast digital inputs (high speed counter)7 Connector for removable terminal block for analog outputs8 Connector for removable terminal block for RS485-1 (Modbus SL or BACnet MS/TP)(3)9 Connector for removable terminal block for RS485-2 (Modbus SL or BACnet MS/TP)(3)10 Connector for removable terminal block for CAN expansion bus11 Slot for micro SD card (2)12 Slot for battery (behind the front flap)13 On TM17pDppp: Built-in display, 4 status LEDs and 5 command keys for settingcontroller parametersOn TM17pBppp: 4 status LEDs and 5 command keys for setting controllerparameters
Multiple BMS (Building Management System) connectivity, embedded or as an option, and an embedded web server make remote control and remote access simple to implement, while a unique software environment supports the development of algorithms and functions that can be used on any platform. Modicon M172 performance logic controllers
